ath9k: Fix channel switch time duration

Since the NoA duration is the maximum time the GO interface
can be offline, it needs to include the time take to
switch channels in the HW.

Signed-off-by: Sujith Manoharan <[email protected]>
Signed-off-by: John W. Linville <[email protected]>

diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c
index 09ff8a6e89666e2789a41ce2f10392bedb4c64ea..a42fd85def2ade1016752aaf47b4870ef2cbf9f2 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -419,7 +419,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
                        avp->noa_index++;
                        avp->noa_start = tsf_time;
                        avp->noa_duration =
-                               TU_TO_USEC(cur_conf->beacon_interval) / 2 -
+                               TU_TO_USEC(cur_conf->beacon_interval) / 2 +
                                sc->sched.channel_switch_time;
 
                        if (test_bit(ATH_OP_SCANNING, &common->op_flags))